{"id":3927,"date":"2020-08-12T10:54:58","date_gmt":"2020-08-12T01:54:58","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=3927"},"modified":"2020-08-20T09:56:38","modified_gmt":"2020-08-20T00:56:38","slug":"learning-opencv-4-computer-vision-with-python-3-chapter3","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/learning-opencv-4-computer-vision-with-python-3-chapter3\/","title":{"rendered":"Learning OpenCV 4 Computer Vision with Python 3, chapter1"},"content":{"rendered":"\n<p>isbn: 978-1789531619<\/p>\n\n\n\n<p>opencv\ub97c \ubc30\uc6b0\ub824 \uc778\ud130\ub137\uc744 \ud5e4\uba54\uae30 \uc804 \uc801\ub2f9\ud55c \ucc45\uc744 \ubcf4\uae30\ub85c \ud588\ub2e4. \uc5ed\uc2dc \ucc3e\uc544\ubcf4\uba74 \uc778\ud130\ub137\uc5d0 \uc788\ub2e4.<\/p>\n\n\n\n<p>\ucc45\uc5d0 \uc2e4\ub9b0 \uc608\uc81c\ub97c \uc2e4\ud589\ud588\ub2e4. \uac1d\uccb4\uc9c0\ud5a5 \ubc29\uc2dd\uc73c\ub85c \ud504\ub85c\uadf8\ub7a8 \ud558\ub77c\ub294\ub370, \uae30\ubcf8 \uac1c\ub150\uc774 \uc5c6\ub294 \ub09c \uc798 \ubabb\ud558\uaca0\ub2e4. \ub0b4\uac00 \ubcf5\uc7a1\ud55c \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc9c0\ub3c4 \uc54a\uc744 \ub4ef \ud558\ub2e4. callback\uc744 \ud65c\uc6a9\ud558\uc5ec window manager\ub97c \uc0ac\uc6a9\ud588\ub294\ub370, \ucc3e\uc544\ubcf4\uba74 \uc54c\uaca0\uc9c0\ub9cc \uc77c\ub2e8 \uadf8\ub0e5 \ub118\uc5b4\uac14\ub2e4. \uc774 \ucc45\uc774 \uac1d\uccb4\uc9c0\ud5a5\uc744 \uc124\uba85\ud558\uc9c0 \uc54a\uc73c\ub2c8\uae4c.<\/p>\n\n\n\n<p>python\uc740 call by refrence\ub85c \uac12\uc744 \uc804\ub2ec\ud558\ub294\ub370, \ud615\uc2dd\uc774 \ub9de\uc9c0 \uc54a\uc73c\uba74 \ubb34\uc2dc\ub418\ub098 \ubcf4\ub2e4. \uc785\ub825\uc73c\ub85c \ubcf4\ub0b8 dimension\uc774 100, 100, 3\uc778\ub370 \ub0b4\ubd80\uc5d0\uc11c \uacc4\uc0b0\ud55c \uac12 dimension\uc774 100, 100, 1\uc774\uba74 \uac12\uc744 \uc368 \uc8fc\uc9c8 \ubabb\ud55c\ub2e4. \uc774\ub97c \ubaa8\ub974\uace0 \ud55c\ucc38 \ud574\ub9f8\ub2e4. \uc774\ubbf8\uc9c0\ub97c \ube44\ub514\uc624 \ucea1\uccd0 \uc7a5\uce58\ub098 \ud30c\uc77c\ub85c color\ub97c \uc785\ud600 \uc77d\uc73c\uba74 width, height, color = 3 \ud615\uc2dd\uc744 \uac16\ub294\ub2e4. \uc774 \uc774\ubbf8\uc9c0\ub97c edge detection \ud568\uc218\ub97c \ud1b5\uacfc\uc2dc\ud0a4\uba74 width, height, color = 1\ub85c \ubcc0\uacbd\ub41c\ub2e4. filter\ub97c \uc801\uc6a9\ud558\uae30 \uc804 \uac15\uc81c\ub85c \ud2c0\uc744 \ub9de\ucdb0\uc92c\ub2e4. \ub2e4\ub978 \ub2a5\ub825\uc790\uac00 \uc4f4 \ucf54\ub4dc\ub97c \uc4f0\ub824\ub2c8 \ud798\ub4e4\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"opencv1\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/uY6naZ1sErk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>docker\ub85c xhost\ub85c \uc2e4\ud589\ud588\ub294\ub370, cv2.imshow\uc5d0 \uc880 \ubb38\uc81c\uac00 \uc788\ub294 \ub4ef \ud558\ub2e4. matplot\uc73c\ub85c \uadf8\ub798\ud504\ub97c \ubc14\uafc0\ub824\uace0 \ud588\uc9c0\ub9cc, \ub098\uc911\uc5d0 \uacb0\uad6d \uc22b\uc790\ub85c\ub9cc \uc778\uc2dd\ud560 \uac83 \uac19\uc544 \uc2dc\uac04\uc744 \uc544\ub07c\ub824 \uadf8\ub0e5 \ub450\uc5c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/dejavuqa.tistory.com\/120\n<\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>isbn: 978-1789531619 opencv\ub97c \ubc30\uc6b0\ub824 \uc778\ud130\ub137\uc744 \ud5e4\uba54\uae30 \uc804 \uc801\ub2f9\ud55c \ucc45\uc744 \ubcf4\uae30\ub85c \ud588\ub2e4. \uc5ed\uc2dc \ucc3e\uc544\ubcf4\uba74 \uc778\ud130\ub137\uc5d0 \uc788\ub2e4. \ucc45\uc5d0 \uc2e4\ub9b0 \uc608\uc81c\ub97c \uc2e4\ud589\ud588\ub2e4. \uac1d\uccb4\uc9c0\ud5a5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3930,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[12],"tags":[796,110,798],"class_list":["post-3927","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-12","tag-opencv","tag-python","tag-raspberry"],"jetpack_featured_media_url":"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2020\/08\/\uc2a4\ud06c\ub9b0\uc0f7-2020-08-12-10-54-14.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/3927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/comments?post=3927"}],"version-history":[{"count":4,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/3927\/revisions"}],"predecessor-version":[{"id":3942,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/3927\/revisions\/3942"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media\/3930"}],"wp:attachment":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media?parent=3927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/categories?post=3927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/tags?post=3927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}